20049671275

素因数分解:

$5^2\times {\mathrm{29}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 26821281344

約数和(自身を除く): 6771610069

約数列:

[1, 5, 25, 29, 43, 67, 145, 215, 331, 335, 725, 841, 1075, 1247, 1655, 1675, 1943, 2881, 4205, 6235, 8275, 9599, 9715, 14233, 14405, 21025, 22177, 31175, 36163, 47995, 48575, 56347, 71165, 72025, 83549, 110885, 180815, 239975, 278371, 281735, 355825, 412757, 417745, 554425, 643133, 904075, 953611, 1391855, 1408675, 2063785, 2088725, 2422921, 3215665, 4768055, 6959275, 10318925, 11969953, 12114605, 16078325, 18650857, 23840275, 27654719, 59849765, 60573025, 93254285, 138273595, 299248825, 466271425, 691367975, 801986851, 4009934255, 20049671275]

約数ペア:

[(1, 20049671275), (5, 4009934255), (25, 801986851), (29, 691367975), (43, 466271425), (67, 299248825), (145, 138273595), (215, 93254285), (331, 60573025), (335, 59849765), (725, 27654719), (841, 23840275), (1075, 18650857), (1247, 16078325), (1655, 12114605), (1675, 11969953), (1943, 10318925), (2881, 6959275), (4205, 4768055), (6235, 3215665), (8275, 2422921), (9599, 2088725), (9715, 2063785), (14233, 1408675), (14405, 1391855), (21025, 953611), (22177, 904075), (31175, 643133), (36163, 554425), (47995, 417745), (48575, 412757), (56347, 355825), (71165, 281735), (72025, 278371), (83549, 239975), (110885, 180815)]